Best Linux firewalls (Rank Wise)

ClearOS: The distro that combines ease of use with functionality
Price: Free
Website: www.clearfoundation.com/Software/overview.html
Rating: 9/10

IPCop: A versatile and lightning-quick colour-coded distro
Price: Free
Website: www.ipcop.org
Rating: 8/10

eBox Platform: This one's more than just a firewall distro
Price: Free
Website: www.ebox-platform.com 
Rating: 9/10

 Monowall: Meet the smallest distribution in our testPrice: Free
Website: http://m0n0.ch 
Rating: 5/10